/* * nghttp2 - HTTP/2 C Library * * Copyright (c) 2012 Tatsuhiro Tsujikawa * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "shrpx_log.h" #ifdef HAVE_SYSLOG_H #include #endif // HAVE_SYSLOG_H #ifdef HAVE_UNISTD_H #include #endif // HAVE_UNISTD_H #ifdef HAVE_INTTYPES_H #include #endif // HAVE_INTTYPES_H #include #include #include #include #include #include #include #include "shrpx_config.h" #include "shrpx_downstream.h" #include "shrpx_worker.h" #include "util.h" #include "template.h" using namespace nghttp2; namespace shrpx { namespace { const StringRef SEVERITY_STR[] = { StringRef::from_lit("INFO"), StringRef::from_lit("NOTICE"), StringRef::from_lit("WARN"), StringRef::from_lit("ERROR"), StringRef::from_lit("FATAL")}; } // namespace namespace { const char *SEVERITY_COLOR[] = { "\033[1;32m", // INFO "\033[1;36m", // NOTICE "\033[1;33m", // WARN "\033[1;31m", // ERROR "\033[1;35m", // FATAL }; } // namespace int Log::severity_thres_ = NOTICE; void Log::set_severity_level(int severity) { severity_thres_ = severity; } int Log::set_severity_level_by_name(const StringRef &name) { for (size_t i = 0, max = array_size(SEVERITY_STR); i < max; ++i) { if (name == SEVERITY_STR[i]) { severity_thres_ = i; return 0; } } return -1; } int severity_to_syslog_level(int severity) { switch (severity) { case (INFO): return LOG_INFO; case (NOTICE): return LOG_NOTICE; case (WARN): return LOG_WARNING; case (ERROR): return LOG_ERR; case (FATAL): return LOG_CRIT; default: return -1; } } Log::Log(int severity, const char *filename, int linenum) : filename_(filename), severity_(severity), linenum_(linenum) {} Log::~Log() { int rv; auto config = get_config(); if (!config) { return; } auto lgconf = log_config(); auto &errorconf = config->logging.error; if (!log_enabled(severity_) || (lgconf->errorlog_fd == -1 && !errorconf.syslog)) { return; } if (errorconf.syslog) { if (severity_ == NOTICE) { syslog(severity_to_syslog_level(severity_), "[%s] %s", SEVERITY_STR[severity_].c_str(), stream_.str().c_str()); } else { syslog(severity_to_syslog_level(severity_), "[%s] %s (%s:%d)", SEVERITY_STR[severity_].c_str(), stream_.str().c_str(), filename_, linenum_); } return; } char buf[4_k]; auto tty = lgconf->errorlog_tty; lgconf->update_tstamp(std::chrono::system_clock::now()); auto &time_local = lgconf->time_local; if (severity_ == NOTICE) { rv = snprintf(buf, sizeof(buf), "%s PID%d [%s%s%s] %s\n", time_local.c_str(), config->pid, tty ? SEVERITY_COLOR[severity_] : "", SEVERITY_STR[severity_].c_str(), tty ? "\033[0m" : "", stream_.str().c_str()); } else { rv = snprintf(buf, sizeof(buf), "%s PID%d [%s%s%s] %s%s:%d%s %s\n", time_local.c_str(), config->pid, tty ? SEVERITY_COLOR[severity_] : "", SEVERITY_STR[severity_].c_str(), tty ? "\033[0m" : "", tty ? "\033[1;30m" : "", filename_, linenum_, tty ? "\033[0m" : "", stream_.str().c_str()); } if (rv < 0) { return; } auto nwrite = std::min(static_cast(rv), sizeof(buf) - 1); while (write(lgconf->errorlog_fd, buf, nwrite) == -1 && errno == EINTR) ; } namespace { template std::pair copy(const char *src, size_t srclen, size_t avail, OutputIterator oitr) { auto nwrite = std::min(srclen, avail); auto noitr = std::copy_n(src, nwrite, oitr); return std::make_pair(noitr, avail - nwrite); } } // namespace namespace { template std::pair copy(const char *src, size_t avail, OutputIterator oitr) { return copy(src, strlen(src), avail, oitr); } } // namespace namespace { template std::pair copy(const std::string &src, size_t avail, OutputIterator oitr) { return copy(src.c_str(), src.size(), avail, oitr); } } // namespace namespace { template std::pair copy(const StringRef &src, size_t avail, OutputIterator oitr) { return copy(src.c_str(), src.size(), avail, oitr); } } // namespace namespace { template std::pair copy(const ImmutableString &src, size_t avail, OutputIterator oitr) { return copy(src.c_str(), src.size(), avail, oitr); } } // namespace namespace { template std::pair copy_l(const char (&src)[N], size_t avail, OutputIterator oitr) { return copy(src, N - 1, avail, oitr); } } // namespace namespace { const char LOWER_XDIGITS[] = "0123456789abcdef"; } // namespace namespace { template std::pair copy_hex_low(const uint8_t *src, size_t srclen, size_t avail, OutputIterator oitr) { auto nwrite = std::min(srclen * 2, avail) / 2; for (auto i = 0u; i < nwrite; ++i) { *oitr++ = LOWER_XDIGITS[src[i] >> 4]; *oitr++ = LOWER_XDIGITS[src[i] & 0xf]; } return std::make_pair(oitr, avail - nwrite); } } // namespace void upstream_accesslog(const std::vector &lfv, const LogSpec &lgsp) { auto lgconf = log_config(); auto &accessconf = get_config()->logging.access; if (lgconf->accesslog_fd == -1 && !accessconf.syslog) { return; } char buf[4_k]; auto downstream = lgsp.downstream; const Request *req = nullptr; if (downstream) { req = &downstream->request(); } auto p = buf; auto avail = sizeof(buf) - 2; lgconf->update_tstamp(lgsp.time_now); auto &time_local = lgconf->time_local; auto &time_iso8601 = lgconf->time_iso8601; for (auto &lf : lfv) { switch (lf.type) { case SHRPX_LOGF_LITERAL: std::tie(p, avail) = copy(lf.value, avail, p); break; case SHRPX_LOGF_REMOTE_ADDR: std::tie(p, avail) = copy(lgsp.remote_addr, avail, p); break; case SHRPX_LOGF_TIME_LOCAL: std::tie(p, avail) = copy(time_local, avail, p); break; case SHRPX_LOGF_TIME_ISO8601: std::tie(p, avail) = copy(time_iso8601, avail, p); break; case SHRPX_LOGF_REQUEST: std::tie(p, avail) = copy(lgsp.method, avail, p); std::tie(p, avail) = copy_l(" ", avail, p); std::tie(p, avail) = copy(lgsp.path, avail, p); std::tie(p, avail) = copy_l(" HTTP/", avail, p); std::tie(p, avail) = copy(util::utos(lgsp.major), avail, p); if (lgsp.major < 2) { std::tie(p, avail) = copy_l(".", avail, p); std::tie(p, avail) = copy(util::utos(lgsp.minor), avail, p); } break; case SHRPX_LOGF_STATUS: std::tie(p, avail) = copy(util::utos(lgsp.status), avail, p); break; case SHRPX_LOGF_BODY_BYTES_SENT: std::tie(p, avail) = copy(util::utos(lgsp.body_bytes_sent), avail, p); break; case SHRPX_LOGF_HTTP: if (req) { auto hd = req->fs.header(lf.value); if (hd) { std::tie(p, avail) = copy((*hd).value, avail, p); break; } } std::tie(p, avail) = copy_l("-", avail, p); break; case SHRPX_LOGF_AUTHORITY: if (req) { if (!req->authority.empty()) { std::tie(p, avail) = copy(req->authority, avail, p); break; } } std::tie(p, avail) = copy_l("-", avail, p); break; case SHRPX_LOGF_REMOTE_PORT: std::tie(p, avail) = copy(lgsp.remote_port, avail, p); break; case SHRPX_LOGF_SERVER_PORT: std::tie(p, avail) = copy(util::utos(lgsp.server_port), avail, p); break; case SHRPX_LOGF_REQUEST_TIME: { auto t = std::chrono::duration_cast( lgsp.request_end_time - lgsp.request_start_time) .count(); auto frac = util::utos(t % 1000); auto sec = util::utos(t / 1000); if (frac.size() < 3) { frac = std::string(3 - frac.size(), '0') + frac; } sec += '.'; sec += frac; std::tie(p, avail) = copy(sec, avail, p); } break; case SHRPX_LOGF_PID: std::tie(p, avail) = copy(util::utos(lgsp.pid), avail, p); break; case SHRPX_LOGF_ALPN: std::tie(p, avail) = copy(lgsp.alpn, avail, p); break; case SHRPX_LOGF_SSL_CIPHER: if (!lgsp.tls_info) { std::tie(p, avail) = copy_l("-", avail, p); break; } std::tie(p, avail) = copy(lgsp.tls_info->cipher, avail, p); break; case SHRPX_LOGF_SSL_PROTOCOL: if (!lgsp.tls_info) { std::tie(p, avail) = copy_l("-", avail, p); break; } std::tie(p, avail) = copy(lgsp.tls_info->protocol, avail, p); break; case SHRPX_LOGF_SSL_SESSION_ID: if (!lgsp.tls_info || lgsp.tls_info->session_id_length == 0) { std::tie(p, avail) = copy_l("-", avail, p); break; } std::tie(p, avail) = copy_hex_low(lgsp.tls_info->session_id, lgsp.tls_info->session_id_length, avail, p); break; case SHRPX_LOGF_SSL_SESSION_REUSED: if (!lgsp.tls_info) { std::tie(p, avail) = copy_l("-", avail, p); break; } std::tie(p, avail) = copy_l(lgsp.tls_info->session_reused ? "r" : ".", avail, p); break; case SHRPX_LOGF_BACKEND_HOST: if (!lgsp.downstream_addr) { std::tie(p, avail) = copy_l("-", avail, p); break; } std::tie(p, avail) = copy(lgsp.downstream_addr->host, avail, p); break; case SHRPX_LOGF_BACKEND_PORT: if (!lgsp.downstream_addr) { std::tie(p, avail) = copy_l("-", avail, p); break; } std::tie(p, avail) = copy(util::utos(lgsp.downstream_addr->port), avail, p); break; case SHRPX_LOGF_NONE: break; default: break; } } *p = '\0'; if (accessconf.syslog) { syslog(LOG_INFO, "%s", buf); return; } *p++ = '\n'; auto nwrite = p - buf; while (write(lgconf->accesslog_fd, buf, nwrite) == -1 && errno == EINTR) ; } int reopen_log_files() { int res = 0; int new_accesslog_fd = -1; int new_errorlog_fd = -1; auto lgconf = log_config(); auto config = get_config(); auto &accessconf = config->logging.access; auto &errorconf = config->logging.error; if (!accessconf.syslog && !accessconf.file.empty()) { new_accesslog_fd = util::open_log_file(accessconf.file.c_str()); if (new_accesslog_fd == -1) { LOG(ERROR) << "Failed to open accesslog file " << accessconf.file; res = -1; } } if (!errorconf.syslog && !errorconf.file.empty()) { new_errorlog_fd = util::open_log_file(errorconf.file.c_str()); if (new_errorlog_fd == -1) { if (lgconf->errorlog_fd != -1) { LOG(ERROR) << "Failed to open errorlog file " << errorconf.file; } else { std::cerr << "Failed to open errorlog file " << errorconf.file << std::endl; } res = -1; } } util::close_log_file(lgconf->accesslog_fd); util::close_log_file(lgconf->errorlog_fd); lgconf->accesslog_fd = new_accesslog_fd; lgconf->errorlog_fd = new_errorlog_fd; lgconf->errorlog_tty = (new_errorlog_fd == -1) ? false : isatty(new_errorlog_fd); return res; } void log_chld(pid_t pid, int rstatus, const char *msg) { std::string signalstr; if (WIFSIGNALED(rstatus)) { signalstr += "; signal "; auto sig = WTERMSIG(rstatus); auto s = strsignal(sig); if (s) { signalstr += s; signalstr += '('; } else { signalstr += "UNKNOWN("; } signalstr += util::utos(sig); signalstr += ')'; } LOG(NOTICE) << msg << ": [" << pid << "] exited " << (WIFEXITED(rstatus) ? "normally" : "abnormally") << " with status " << std::hex << rstatus << std::oct << "; exit status " << WEXITSTATUS(rstatus) << (signalstr.empty() ? "" : signalstr.c_str()); } void redirect_stderr_to_errorlog() { auto lgconf = log_config(); auto &errorconf = get_config()->logging.error; if (errorconf.syslog || lgconf->errorlog_fd == -1) { return; } dup2(lgconf->errorlog_fd, STDERR_FILENO); } } // namespace shrpx